Tornadoes · United States · Kentucky · 2021

EF1 tornado, Tompkinsville, Kentucky, May 3, 2021

This EF1 tornado ran 0.5 miles across Monroe County on May 3, 2021, touching down at 8:08 AM CDT and reaching 60 yards wide. It killed nobody.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. EF065 to 85 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. EF186 to 110 mphthis tornado

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. EF2111 to 135 mph

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. EF3136 to 165 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. EF4166 to 200 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. EF5over 200 mph

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unrated

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating
EF1
Date
May 3, 2021
Touchdown
8:08 AM CDT (13:08 UTC)
Lifted
8:09 AM CDT (13:09 UTC)
On the ground
1 minutes
Path length
0.5 miles (0.8 km)
Path width
60 yards (55 m)
Deaths
0
Injuries
0
County
Monroe County
Touchdown point
36.702, -85.696
Lift-off point
36.709, -85.681
Record number
2105030708-01

The damage survey

14 damage points were recorded along this path by NWS LMK, in the Damage Assessment Toolkit the survey teams carry. The strongest indicator was rated EF1. The highest wind the damage implies is 95 mph.

  • Large travel trainer knocked down, many trees snapped or uprooted

Survey points are preliminary and are the raw material the published rating was built from. Source: NWS Damage Assessment Toolkit.

What the Weather Service recorded

Early on May 3rd, central Kentucky sat in the warm sector ahead of an approaching surface low. Much of the region saw only rain showers, but one isolated cell in southern Kentucky was able to produce a short lived EF-1 tornado in the city of Tompkinsville, KY. ||On May 4th, a cold front, following the first system, produced additional rain showers and thunderstorms on the already saturated ground. The result was widespread flash flooding with isolated severe wind damage.

The National Weather Service determined an EF-1 tornado with maximum sustained winds of 95 mph caused a damage path 60 yards wide. ||The thunderstorm quickly became severe in southwest Monroe County. It quickly became severe in southwest Monroe County and became tornadic on the southwest side of Tompkinsville. The tornado touched down near the intersection of Second and Jackson Streets. Trees were lying in multiple directions and most of them were twisted, snapped, or uprooted. Power lines were down, and several power poles were snapped. Winds at that location were between 85 and 90 mph with a width of 50 yards. ||Farther to the northeast, between 5th Street and Carter Street, the tornado increased to 95 mph and the width expanded out to 60 yards. Several homes experienced roof damage with some windows blown out. One home had multiple large trees uprooted with a camper trailer and pontoon boat flipped over. There were several pieces of lumber that were impaled in the ground and pieces of sheet metal thrown into trees. ||The US Bank building received roof damage before the tornado briefly lifted before touching down near the intersection of Pedigo and White Streets. ||There was significant tree damage on the east of Main Street by Pedigo Street. Trees were facing multiple directions. Mud spatter was on the backside of homes and vehicles along Short Street to Monroe Street. Multiple power lines were down in the area. Winds decreased to 90 mph along Monroe Street. ||The National Weather Service drone found some twisted tree tops near Spring Valley Road and Woodhaven as a result of wind speeds of 85 mph. The tornado lifted at Jackie Crow Salvage Yard as it threw debris on top of a hill about 250 yards from the salvage yard. ||Several videos showed brief funnels coming down from the main storm, almost like a small skipping tornado.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

Issued (UTC)ExpiredProductOffice
13:00 UTC13:30 UTCSevere Thunderstorm WarningLMK

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Slight Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 12:50 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Nashville Metro, TN (KBNA), 12:00Z

1.1 hours before the tornado, 104 km from the path. May 3, 2021.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2021-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 85 joules per kilogram, CIN -17, lifted condensation level 658 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2021-05-03The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 381 square meters per square second, 0 to 6 km bulk shear 45 knots.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
85 J/kg
Mixed-layer CIN
-17 J/kg
Surface CAPE
160 J/kg
Mixed-layer LCL
658 m above ground
0-6 km bulk shear
45 kt
0-1 km bulk shear
43 kt
0-1 km storm-relative helicity
381 m²/s²
0-3 km storm-relative helicity
473 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2
0-3 km lapse rate
5.2 K/km

Open this sounding in Storm Lab

Nashville Metro, TN (KBNA), 00:00Z

10.9 hours after it, 104 km from the path. May 4, 2021.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 00:00Z on 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 2263 joules per kilogram, CIN -5, lifted condensation level 1050 meters above ground. Wind barbs in knots down the right edge.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Nashville Metro, TN at 00:00Z on 2021-05-04The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 119 square meters per square second, 0 to 6 km bulk shear 30 knots.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
2263 J/kg
Mixed-layer CIN
-5 J/kg
Surface CAPE
2875 J/kg
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
30 kt
0-1 km bulk shear
19 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
193 m²/s²
Significant tornado parameter
1.3
Supercell composite
7.6
0-3 km lapse rate
5.9 K/km

Open this sounding in Storm Lab

The radar

The Nashville radar (KOHX), 93 km away, was scanning. The volume nearest the touchdown began at 13:06 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
13:08 UTCTORNADOTompkinsvilleMonroe, KYDELAYED REPORT...STORM DAMAGE SURVEY FOUND AN EF1 TORNADO WITH PEAK WINDS OF 95 MPH. MAXIMUM WIDTH WAS 60 YARDS AND WAS ON THE GROUND FOR A HALF MILE. SEVERAL TREES UPROOTED AND SOME ROOF DAMAGE AS WELL AS POWER OUTAGES.
13:09 UTCTSTM WND DMG2 Ene TompkinsvilleMonroe, KYMULTIPLE REPORTS OF NUMEROUS TREES DOWN AS WELL AS STRUCTURAL DAMAGE IN TOMPKINSVILLE ALONG WITH POWER OUTAGES. LOCAL MEDIA REPORTS POSSIBLE TORNADO.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2021 tornado in KentuckyEvery tornado in Kentucky since 1950Warnings in force in Kentucky nowThe forecast where you are

The other tornadoes of May 3, 2021

30 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
May 310:00 AM EDTEF1Douglas, GA1.4250$250,000
May 310:22 AM EDTEF1Fulton, GA5.7400$250,000
May 312:39 PM EDTEF0Walton, GA1.4200$100,000
May 312:39 PM EDTEF1York, SC0.5150$350,000
May 311:42 AM CDTEF0Coffee, TN0.850$15,000
May 312:54 PM EDTEF1Madison, GA5.5250
May 31:29 PM EDTEF0Oglethorpe, GA1.9200$100,000
May 31:41 PM EDTEF1Elbert, GA0.125$50,000
May 32:04 PM EDTEF2Abbeville, SC29.41501$115,000
May 32:23 PM EDTEF0Stanly, NC1.5150$50,000
May 33:01 PM EDTEF2Northumberland, VA4.4250$500,000
May 34:57 PM CDTUnratedCass, IL0.550
May 35:05 PM CDTUnratedCass, IL1.5100
May 36:27 PM EDTEF1Jefferson, WV1.81251$100,000
May 35:27 PM CDTUnratedSangamon, IL0.350
May 36:02 PM CDTEF0Hood, TX0.450$500
May 36:10 PM CDTUnratedSangamon, IL0.450
May 36:14 PM CDTUnratedSangamon, IL0.650
May 37:10 PM CDTUnratedHill, TX0.025
May 38:14 PM EDTEF0Frederick, MD0.8200$150,000
May 37:18 PM CDTEF2Hill, TX3.4150$350,000
May 38:35 PM EDTEF0Frederick, MD0.6150$100,000
May 37:41 PM CDTEF0Collin, TX0.550$500
May 38:47 PM EDTEF0Carroll, MD0.275$50,000
May 38:00 PM CDTEF0Johnson, TX0.250$500
May 39:37 PM EDTEF0Lawrence, PA0.250
May 38:43 PM CDTEF2Ellis, TX5.46598$1.5 million
May 39:33 PM CDTEF1Sequoyah, OK to AR28.82,2001$16 million
May 39:36 PM CDTEF1Sequoyah, OK to AR10.3900$110,000
May 310:06 PM CDTEF1Crawford, AR2.7300$20,000

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.